timestamp /ˈtaɪmˌstæmp/noun 2verb 1forms 4 noun2 •A variable containing the date and time at which an event occurred, often included in a log to track the sequence of events. •(Internet) The time at which something in a video occurs. verb1 •To record the date and time of (an event, etc). formstimestamped · time-stamped · timestamping · timestamps